Black Grout gone white

[dgatile]

Just tiled kitchen floor in black porcelain tiles with Bal black superflex grout, looked great wet but dries white.
any ideas anyone.

 

[Ian]

Can you post a picture or 2 for us to look at?


Sent via Tapatalk for iPhone

 

[Stewart]

More than likely over wetting of the grout while washing down causing leeching, or incorrect mixing. These are the 2 main reasons for patchy coloured grouts........


Created on iPhone.....

 

[Minesacarling]

I was on a job once where they called the Mapei rep because the grout dried in different shades and they basically said it was due to the washboy sponge leaving to much water on the tiles when final washing.

 

[dgatile]

Thought it might be that, was using a rubi washboy had to go over with a sponge aswell any ideas how to solve.

 

[Minesacarling]

I'd try giving it another wash or just scrape the top off the grout then scim over it again with grout and just wash it again carefully

 

[charlie1]

Aye, could be a regrout! How many m2 are we talking?

 

[Stewart]

Use a grout colourant such as "Universal" you can get it from TradeTiler and works really well....


Created on iPhone.....

 

[Ian]

As Stewart has suggested, use a colourant, here's a link Tradetiler Universeal Grout Colour

 

[dgatile]

Its 26m don't fancy a regrout.

 

[dgatile]

Sounds just what i need going to order sum, thanks for that

 

[dgatile]

Thanks for link, had a look and will give it a try.

 

[Minesacarling]

Just done some research and apparently it's the polymers in the grout coming to the surface and that's due to over washing. If it were a mapei grout they do pens that put some liquid on the grout that draws the polymers to the surface and gives a even colour to the finish. So I imagine bal and the other brands might do something similar

 

[AliGage]

BAL does microshield and microrevive. It doesn't detail that it's specifically for this issue, more of a cleaner. But will probably do the job.

Was it a new sponge in your washboy? I do fond that new sponge floats retain a lot of water. Run your finger and/or a dry sponge over the grout (gently) after washing and you shouldn't have this problem again. Black grout is the worst for this i've found as well.

 

[dgatile]

yes it was a new sponge on the washboy. it did leave it very wet had to go over with a bucket and sponge, will check bal's website thanks for that